25722748928 has 54 divisors (see below), whose sum is σ = 51561693099. Its totient is φ = 12832342016.

The previous prime is 25722748921. The next prime is 25722748973. The reversal of 25722748928 is 82984722752.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 12861374464 + 12861374464 = 113408^2 + 113408^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=113408.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25722748921) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 58064675 + ... + 58065117.

Almost surely, 2^25722748928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25722748928

25722748928 is an abundant number, since it is smaller than the sum of its proper divisors (25838944171).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25722748928 is an frugal number, since it uses more digits than its factorization.

25722748928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920 (or 445 counting only the distinct ones).

The product of its digits is 9031680, while the sum is 56.

The spelling of 25722748928 in words is "twenty-five billion, seven hundred twenty-two million, seven hundred forty-eight thousand, nine hundred twenty-eight".